CN112812627A - Aluminum profile for automobile luggage rack - Google Patents
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- CN112812627A CN112812627A CN202011641075.XA CN202011641075A CN112812627A CN 112812627 A CN112812627 A CN 112812627A CN 202011641075 A CN202011641075 A CN 202011641075A CN 112812627 A CN112812627 A CN 112812627A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/011—Nanostructured additives
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses an aluminum profile for an automobile luggage rack, which comprises a substrate and a coating layer on the surface of the substrate; the coating layer comprises the following raw materials in parts by weight: 50-75 parts of thermosetting fluorocarbon resin, 30-45 parts of epoxy resin, 25-38 parts of polyester resin, 20-45 parts of curing agent, 2-3.8 parts of flatting agent, 0.5-1.1 parts of benzoin, 8-17 parts of modified nano titanium dioxide, 2-9 parts of nano calcium carbonate, 3-9 parts of nano alumina, 2-11 parts of andalusite, 20-33 parts of modified polyvinylidene fluoride, 3-8 parts of perfluoroethylene propylene copolymer, 3-6 parts of styrene-butadiene-styrene block copolymer, 1-5 parts of polydopamine, 1682-2.8 parts of antioxidant, 22460.3-1 part of antioxidant, 240.5-1.3 parts of antioxidant THP and 3-8 parts of POSS. The aluminum profile provided by the invention has the advantages of high surface quality, good wear resistance and long service life.
Description
Technical Field
The invention relates to the technical field of aluminum profiles, in particular to an aluminum profile for an automobile luggage rack.
Background
The automobile luggage rack is a bracket installed on the roof of a car, can load articles with larger appearance volume, and has the function of beautifying the streamline of the car body besides the practical carrying function. At present, most of the luggage racks are made of stainless steel materials, and although the stainless steel materials are difficult to rust, the stainless steel materials are expensive and have large mass, so that the development direction of vehicle light weight is not facilitated. The aluminum alloy luggage rack can enable the automobile body to achieve the effect of light weight, but the wear resistance of the existing aluminum alloy material is not ideal, and the application of the aluminum alloy material in the field of automobile luggage racks is limited.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides an aluminum profile for an automobile luggage rack, which is high in surface quality, good in wear resistance and long in service life.
The invention provides an aluminum profile for an automobile luggage rack, which comprises an aluminum profile substrate and a coating layer coated on the surface of the aluminum profile substrate; wherein, the coating layer comprises the following raw materials in parts by weight: 50-75 parts of thermosetting fluorocarbon resin, 30-45 parts of epoxy resin, 25-38 parts of polyester resin, 20-45 parts of curing agent, 2-3.8 parts of flatting agent, 0.5-1.1 parts of benzoin, 8-17 parts of modified nano titanium dioxide, 2-9 parts of nano calcium carbonate, 3-9 parts of nano alumina, 2-11 parts of andalusite, 20-33 parts of modified polyvinylidene fluoride, 3-8 parts of perfluoroethylene propylene copolymer, 3-6 parts of styrene-butadiene-styrene block copolymer, 1-5 parts of polydopamine, 1682-2.8 parts of antioxidant, 22460.3-1 part of antioxidant, 240.5-1.3 parts of antioxidant THP and 3-8 parts of POSS.
Preferably, the epoxy resin is epoxy resin E-44, epoxy resin E-12 and epoxy resin E-51 in a weight ratio of 3-10: 2-6: 1-5.
Preferably, the polyester resin is a polyester resin with an acid value of 40-55mgKOH/g, and the weight ratio of the polyester resin with an acid value of 20-25mgKOH/g is 1-5: 8-21.
Preferably, the curing agent is an isocyanate curing agent; the flatting agent is one or a mixture of two of a BD-3376 flatting agent and a BD-3310 flatting agent.
Preferably, the modified nano titanium dioxide is stearic acid modified nano titanium dioxide.
Preferably, the nano calcium carbonate is borate coupling agent modified nano calcium carbonate.
Preferably, the nano alumina is n-butanol modified nano alumina.
Preferably, the modified polyvinylidene fluoride is prepared according to the following process: mixing graphene oxide and 2-amino-4-tert-butylphenol, mixing for 40-80min at the temperature of 170 ℃ and 190 ℃ by adopting a mechanical force field, washing and drying to obtain a material A; adding polyvinylidene fluoride into a mixture of sodium hydroxide, potassium permanganate and water, stirring and reacting for 50-80min at 55-65 ℃, then adding sodium sulfite, sulfuric acid and water into the mixture, stirring for 40-60min at room temperature, and drying to obtain a material B; mixing the materials A, SOCl2And mixing the mixture with water and the material B, stirring for 30-45min at room temperature, and adjusting the pH value to be neutral to obtain the modified polyvinylidene fluoride.
Preferably, in the preparation process of the modified polyvinylidene fluoride, the weight ratio of the graphene oxide to the 2-amino-4-tert-butylphenol is 1-5: 0.5-2.
Preferably, in the preparation process of the modified polyvinylidene fluoride, in the mixture of sodium hydroxide, potassium permanganate and water, the weight ratio of sodium hydroxide, potassium permanganate and water is 8: 1: 15-20 parts of; in the mixture of the sodium sulfite, the sulfuric acid and the water, the weight ratio of the sodium sulfite to the sulfuric acid to the water is 1: 1: 40-50; the material A, SOCl2In admixture with water, material A, SOCl2The weight ratio of water is 1-3: 1: 6-10; the weight ratio of the material A to the material B is 1: 3-8.
The stearic acid modified nano titanium dioxide can be obtained by mixing stearic acid and nano titanium dioxide and then performing ball milling; the borate coupling agent modified nano calcium carbonate can be obtained by mixing the borate coupling agent with the nano calcium carbonate and then carrying out ball milling; the n-butyl alcohol modified nano alumina can be obtained by mixing n-butyl alcohol and nano alumina and then carrying out ball milling.
The aluminum profile for the automobile luggage rack is coated in the raw materials of the coating layer on the surface of the aluminum profile substrate, and particularly, the thermosetting fluorocarbon resin, the epoxy resin and the polyester resin are used as main materials, so that the obtained coating has good binding force with the substrate, the coating is more uniform, the film forming property is good, and the surface quality of the obtained aluminum profile is high; the perfluoroethylene propylene copolymer, the styrene-butadiene-styrene block copolymer and the polydopamine are added into a system and have a synergistic effect with benzoin, so that bubbles, shrinkage cavities and particles can be reduced, the film forming effect of the coating is effectively improved, the surface quality of an aluminum profile is further improved, the system is endowed with good stability and compatibility, and the adhesive force of the coating layer is improved; in the preparation process of the modified polyvinylidene fluoride, firstly, graphene oxide is acidified and then mixed with 2-amino-4-tert-butylphenol to generate a grafting reaction, and an anti-aging group is introduced into the graphene oxide to obtain a material A; then controlling the reaction condition to make polyvinylidene fluoride molecule produce defluorination reaction, introducing active unsaturated bond, then introducing SO3 -Ions, mixed with the material A, react with the amino groups therein and react with themThe modified polyvinylidene fluoride is added into a system and is uniformly dispersed in the system, and on one hand, the modified polyvinylidene fluoride is matched with an antioxidant 168, an antioxidant 2246, an antioxidant THP-24 and polyhedral oligomeric silsesquioxane POSS to endow the paint layer with excellent aging resistance, and on the other hand, the modified polyvinylidene fluoride is matched with a perfluoroethylene propylene copolymer to endow the paint layer with excellent hydrophobicity; on the other hand, the modified nano titanium dioxide, nano calcium carbonate, nano alumina and andalusite are matched to endow the paint layer with excellent mechanical property, wear resistance and corrosion resistance.
The coating layer provided by the invention has the advantages that the raw materials with corresponding properties are reasonably selected and the proportion is optimized, the coating formed on the surface of the aluminum profile is stable in performance, the surface is smooth and flat, the problem of shrinkage cavity is effectively controlled, the corrosion resistance, the wear resistance and the aging resistance are good, and the decoration performance is strong.
Detecting the performance of the coating layer in the invention; among them, corrosion resistance (55 days, 25 ℃, saturated calcium hydroxide): no foaming, softening, peeling and no micropores; the impact resistance is more than or equal to 70cm (GB/T1732-1993), and the adhesive force is 0 grade (GB/T1720-1979); the pencil hardness is more than or equal to 3H (GB/T6739-2006); the film is exposed to the sun for 30 days, the gloss retention rate is more than 89.9 percent, and the aging resistance is good; the wear resistance is carried out according to the GB/T1768-2006 standard, and the weight loss is less than 10.6 mg; vertically placing the aluminum profile in a pressure steam sterilizer, keeping 80% of the area of the aluminum profile immersed in boiling water, keeping the pressure of 0.1Mpa, continuously placing for 75h, taking out and air-drying, wherein the coating layer has no phenomena of bubbling, softening, discoloring, rusting and the like.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
The invention provides an aluminum profile for an automobile luggage rack, which comprises an aluminum profile substrate and a coating layer coated on the surface of the aluminum profile substrate; wherein, the coating layer comprises the following raw materials in parts by weight: 75 parts of thermosetting fluorocarbon resin, 30 parts of epoxy resin, 38 parts of polyester resin, 20 parts of curing agent, 3 parts of flatting agent, 1.1 parts of benzoin, 8 parts of modified nano titanium dioxide, 9 parts of nano calcium carbonate, 3 parts of nano aluminum oxide, 9 parts of andalusite, 20 parts of modified polyvinylidene fluoride, 8 parts of perfluoroethylene propylene copolymer, 6 parts of styrene-butadiene-styrene block copolymer, 5 parts of polydopamine, 1682 parts of antioxidant, 22461 parts of antioxidant THP-240.5 parts and 8 parts of POSS.
Example 2
The aluminum profile for the automobile luggage rack is characterized by comprising an aluminum profile substrate and a coating layer coated on the surface of the aluminum profile substrate; wherein, the coating layer comprises the following raw materials in parts by weight: 50 parts of thermosetting fluorocarbon resin, 45 parts of epoxy resin, 25 parts of polyester resin, 45 parts of curing agent, 2 parts of flatting agent, 0.5 part of benzoin, 17 parts of modified nano titanium dioxide, 2 parts of nano calcium carbonate, 9 parts of nano aluminum oxide, 11 parts of andalusite, 27 parts of modified polyvinylidene fluoride, 3 parts of perfluoroethylene propylene copolymer, 5 parts of styrene-butadiene-styrene block copolymer, 1 part of polydopamine, 1682.8 parts of antioxidant, 22460.3 parts of antioxidant THP-241.3 parts and 3 parts of POSS;
the modified polyvinylidene fluoride is prepared by the following process: mixing graphene oxide and 2-amino-4-tert-butylphenol, mixing for 80min at 170 ℃ by adopting a mechanical force field, washing and drying to obtain a material A; adding polyvinylidene fluoride into a mixture of sodium hydroxide, potassium permanganate and water, stirring and reacting for 80min at 55 ℃, then adding sodium sulfite, sulfuric acid and water into the mixture, stirring for 40min at room temperature, and drying to obtain a material B; mixing the materials A, SOCl2Mixing the mixture with water and the material B, stirring for 45min at room temperature, and adjusting the pH to be neutral to obtain the modified polyvinylidene fluoride; wherein in the preparation process, the weight ratio of the graphene oxide to the 2-amino-4-tert-butylphenol is 1: 2; in the mixture of the sodium hydroxide, the potassium permanganate and the water, the weight ratio of the sodium hydroxide to the potassium permanganate to the water is 8: 1: 15; in the mixture of the sodium sulfite, the sulfuric acid and the water, the weight ratio of the sodium sulfite to the sulfuric acid to the water is 1: 1: 50; the material A, SOCl2In admixture with water, material A, SOCl2The weight ratio of water is 1: 1: 10; the weight ratio of the material A to the material B is 1: 5.
example 3
The invention provides an aluminum profile for an automobile luggage rack, which comprises an aluminum profile substrate and a coating layer coated on the surface of the aluminum profile substrate; wherein, the coating layer comprises the following raw materials in parts by weight: 57 parts of thermosetting fluorocarbon resin, 35 parts of epoxy resin, 29 parts of polyester resin, 41 parts of isocyanate curing agent, 3.8 parts of BD-3376 flatting agent, 0.9 part of benzoin, 11 parts of modified nano titanium dioxide, 6 parts of nano calcium carbonate, 7 parts of nano alumina, 2 parts of andalusite, 33 parts of modified polyvinylidene fluoride, 6 parts of perfluoroethylene propylene copolymer, 3 parts of styrene-butadiene-styrene block copolymer, 3 parts of polydopamine, 1682.7 parts of antioxidant, 22460.7 parts of antioxidant, THP-241 parts of antioxidant and 6 parts of POSS;
wherein the epoxy resin is epoxy resin E-44, epoxy resin E-12 and epoxy resin E-51 according to the weight ratio of 10: 2: 5 with a mixture of; the polyester resin is a polyester resin with an acid value of 40mgKOH/g, and the polyester resin with an acid value of 25mgKOH/g is prepared from the following components in a weight ratio of 1: 21, a mixture of; the modified nano titanium dioxide is stearic acid modified nano titanium dioxide; the nano calcium carbonate is boric acid ester coupling agent modified nano calcium carbonate; the nano alumina is n-butyl alcohol modified nano alumina;
the modified polyvinylidene fluoride is prepared by the following process: mixing graphene oxide and 2-amino-4-tert-butylphenol, mixing for 40min at 190 ℃ by adopting a mechanical force field, washing and drying to obtain a material A; adding polyvinylidene fluoride into a mixture of sodium hydroxide, potassium permanganate and water, stirring and reacting for 50min at 65 ℃, then adding sodium sulfite, sulfuric acid and water into the mixture, stirring for 60min at room temperature, and drying to obtain a material B; mixing the materials A, SOCl2Mixing the mixture with water and the material B, stirring for 30min at room temperature, and adjusting the pH to be neutral to obtain the modified polyvinylidene fluoride; wherein in the preparation process, the weight ratio of the graphene oxide to the 2-amino-4-tert-butylphenol is 5: 0.5; the weight ratio of the sodium hydroxide to the potassium permanganate to the water is 8: 1: 20; in the mixture of the sodium sulfite, the sulfuric acid and the water, the weight ratio of the sodium sulfite to the sulfuric acid to the water is 1: 1: 40; the above-mentionedMaterial A, SOCl2In admixture with water, material A, SOCl2The weight ratio of water is 3: 1: 6; the weight ratio of the material A to the material B is 1: 8.
example 4
The invention provides an aluminum profile for an automobile luggage rack, which comprises an aluminum profile substrate and a coating layer coated on the surface of the aluminum profile substrate; wherein, the coating layer comprises the following raw materials in parts by weight: 72 parts of thermosetting fluorocarbon resin, 34 parts of epoxy resin, 35 parts of polyester resin, 28 parts of isocyanate curing agent, 3 parts of BD-3310 flatting agent, 0.7 part of benzoin, 15 parts of modified nano titanium dioxide, 5 parts of nano calcium carbonate, 7 parts of nano alumina, 4 parts of andalusite, 30 parts of modified polyvinylidene fluoride, 4 parts of perfluoroethylene propylene copolymer, 5 parts of styrene-butadiene-styrene block copolymer, 1.7 parts of polydopamine, 1682.5 parts of antioxidant, 22460.7 parts of antioxidant THP-241 parts and 4 parts of POSS;
wherein the epoxy resin is epoxy resin E-44, epoxy resin E-12 and epoxy resin E-51 according to the weight ratio of 3: 6: 1; the polyester resin is a polyester resin with an acid value of 55mgKOH/g, and the polyester resin with an acid value of 20mgKOH/g is prepared from the following components in parts by weight: 8, a mixture of; the modified nano titanium dioxide is stearic acid modified nano titanium dioxide; the nano calcium carbonate is boric acid ester coupling agent modified nano calcium carbonate; the nano alumina is n-butyl alcohol modified nano alumina;
the modified polyvinylidene fluoride is prepared by the following process: mixing graphene oxide and 2-amino-4-tert-butylphenol, mixing for 55min at 175 ℃ by adopting a mechanical force field, washing and drying to obtain a material A; adding polyvinylidene fluoride into a mixture of sodium hydroxide, potassium permanganate and water, stirring and reacting for 65min at 58 ℃, then adding sodium sulfite, sulfuric acid and water into the mixture, stirring for 48min at room temperature, and drying to obtain a material B; mixing the materials A, SOCl2Mixing the mixture with water and the material B, stirring for 37min at room temperature, and adjusting the pH to be neutral to obtain the modified polyvinylidene fluoride; wherein in the preparation process, the weight ratio of the graphene oxide to the 2-amino-4-tert-butylphenol is 3: 1; the hydrogen hydroxideIn the mixture of sodium, potassium permanganate and water, the weight ratio of sodium hydroxide to potassium permanganate to water is 8: 1: 17; in the mixture of the sodium sulfite, the sulfuric acid and the water, the weight ratio of the sodium sulfite to the sulfuric acid to the water is 1: 1: 46; the material A, SOCl2In admixture with water, material A, SOCl2The weight ratio of water is 2: 1: 7; the weight ratio of the material A to the material B is 1: 3.
example 5
The invention provides an aluminum profile for an automobile luggage rack, which comprises an aluminum profile substrate and a coating layer coated on the surface of the aluminum profile substrate; wherein, the coating layer comprises the following raw materials in parts by weight: 58 parts of thermosetting fluorocarbon resin, 42 parts of epoxy resin, 27 parts of polyester resin, 42 parts of curing agent, 2.6 parts of flatting agent, 1 part of benzoin, 9 parts of modified nano titanium dioxide, 7 parts of nano calcium carbonate, 6 parts of nano aluminum oxide, 8 parts of andalusite, 28 parts of modified polyvinylidene fluoride, 7 parts of perfluoroethylene propylene copolymer, 4 parts of styrene-butadiene-styrene block copolymer, 4 parts of polydopamine, 1682 parts of antioxidant, 22460.8 parts of antioxidant, THP-240.7 parts of antioxidant and 6 parts of POSS;
wherein the epoxy resin is epoxy resin E-44, epoxy resin E-12 and epoxy resin E-51 according to the weight ratio of 7: 3: 4; the polyester resin is a polyester resin with an acid value of 50mgKOH/g, and the weight ratio of the polyester resin with an acid value of 25mgKOH/g is 3: 11; the curing agent is an isocyanate curing agent; the flatting agent is a BD-3376 flatting agent, and the BD-3310 flatting agent is mixed according to a weight ratio of 1: 1; the modified nano titanium dioxide is stearic acid modified nano titanium dioxide; the nano calcium carbonate is boric acid ester coupling agent modified nano calcium carbonate; the nano alumina is n-butyl alcohol modified nano alumina;
the modified polyvinylidene fluoride is prepared by the following process: mixing graphene oxide and 2-amino-4-tert-butylphenol, mixing for 65min at 180 ℃ by adopting a mechanical force field, washing and drying to obtain a material A; adding polyvinylidene fluoride into mixture of sodium hydroxide, potassium permanganate and water, stirring and reacting at 60 deg.C for 70min, and adding sodium sulfite, sulfuric acid and waterStirring the mixture at room temperature for 52min, and drying to obtain a material B; mixing the materials A, SOCl2Mixing the mixture with water and the material B, stirring for 39min at room temperature, and adjusting the pH to be neutral to obtain the modified polyvinylidene fluoride; wherein the weight ratio of the graphene oxide to the 2-amino-4-tert-butylphenol is 4: 0.9; in the mixture of the sodium hydroxide, the potassium permanganate and the water, the weight ratio of the sodium hydroxide to the potassium permanganate to the water is 8: 1: 19; in the mixture of the sodium sulfite, the sulfuric acid and the water, the weight ratio of the sodium sulfite to the sulfuric acid to the water is 1: 1: 47; the material A, SOCl2In admixture with water, material A, SOCl2The weight ratio of water is 1.8: 1: 7; the weight ratio of the material A to the material B is 1: 4.
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The aluminum profile for the automobile luggage rack is characterized by comprising an aluminum profile substrate and a coating layer coated on the surface of the aluminum profile substrate; wherein, the coating layer comprises the following raw materials in parts by weight: 50-75 parts of thermosetting fluorocarbon resin, 30-45 parts of epoxy resin, 25-38 parts of polyester resin, 20-45 parts of curing agent, 2-3.8 parts of flatting agent, 0.5-1.1 parts of benzoin, 8-17 parts of modified nano titanium dioxide, 2-9 parts of nano calcium carbonate, 3-9 parts of nano alumina, 2-11 parts of andalusite, 20-33 parts of modified polyvinylidene fluoride, 3-8 parts of perfluoroethylene propylene copolymer, 3-6 parts of styrene-butadiene-styrene block copolymer, 1-5 parts of polydopamine, 1682-2.8 parts of antioxidant, 22460.3-1 part of antioxidant, 240.5-1.3 parts of antioxidant THP and 3-8 parts of POSS.
2. The aluminum profile for the automobile luggage rack according to claim 1, wherein the epoxy resin is epoxy resin E-44, epoxy resin E-12, epoxy resin E-51 in a weight ratio of 3-10: 2-6: 1-5.
3. The aluminum profile for the automobile luggage rack according to claim 1 or 2, wherein the polyester resin is a polyester resin having an acid value of 40 to 55mgKOH/g, and the polyester resin having an acid value of 20 to 25mgKOH/g is a polyester resin having a molecular weight of 1 to 5: 8-21.
4. The aluminum profile for an automobile roof rack according to any one of claims 1 to 3, wherein the curing agent is an isocyanate curing agent; the flatting agent is one or a mixture of two of a BD-3376 flatting agent and a BD-3310 flatting agent.
5. The aluminum profile for the automobile luggage rack according to any one of claims 1 to 4, wherein the modified nano titanium dioxide is stearic acid modified nano titanium dioxide.
6. The aluminum profile for the automobile luggage rack according to any one of claims 1 to 5, wherein the nano calcium carbonate is borate ester coupling agent modified nano calcium carbonate.
7. The aluminum profile for the automobile luggage rack according to any one of claims 1 to 6, wherein the nano alumina is n-butanol modified nano alumina.
8. The aluminum profile for the automobile luggage rack according to any one of claims 1 to 7, wherein the modified polyvinylidene fluoride is prepared according to the following process: mixing graphene oxide and 2-amino-4-tert-butylphenol, mixing for 40-80min at the temperature of 170 ℃ and 190 ℃ by adopting a mechanical force field, washing and drying to obtain a material A; adding polyvinylidene fluoride into a mixture of sodium hydroxide, potassium permanganate and water, stirring and reacting for 50-80min at 55-65 ℃, then adding sodium sulfite, sulfuric acid and water into the mixture, stirring for 40-60min at room temperature, and drying to obtain a material B; mixing the materials A, SOCl2Mixing the mixture with water and material B, stirring at room temperature for 30-45min, and regulatingAnd obtaining the modified polyvinylidene fluoride when the pH value is neutral.
9. The aluminum profile for the automobile luggage rack according to claim 8, wherein in the preparation process of the modified polyvinylidene fluoride, the weight ratio of the graphene oxide to the 2-amino-4-tert-butylphenol is 1-5: 0.5-2.
10. The aluminum profile for the automobile luggage rack according to claim 8 or 9, wherein in the preparation process of the modified polyvinylidene fluoride, the weight ratio of sodium hydroxide, potassium permanganate and water in the mixture of sodium hydroxide, potassium permanganate and water is 8: 1: 15-20 parts of; in the mixture of the sodium sulfite, the sulfuric acid and the water, the weight ratio of the sodium sulfite to the sulfuric acid to the water is 1: 1: 40-50; the material A, SOCl2In admixture with water, material A, SOCl2The weight ratio of water is 1-3: 1: 6-10; the weight ratio of the material A to the material B is 1: 3-8.
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| CN202011641075.XA CN112812627A (en) | 2020-12-31 | 2020-12-31 | Aluminum profile for automobile luggage rack |
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| CN202011641075.XA CN112812627A (en) | 2020-12-31 | 2020-12-31 | Aluminum profile for automobile luggage rack |
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Application publication date: 20210518 |